Weighing-machine



(No Model.) I 5 Sheets-Sheet 2 F. H. RICHARDS. WBIGHING MACHINE.

No. 585,978. Patented July 6,1897.

Witnesses;

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5 Sheets-Sheet 3.

P. H. RICHARDS. WBIGHING MACHINE.

(No Model.

Patented July 6,1897.

Inweztof:

(No Model.) .5 sheets-sheen 4.

F. H. RICHARDS. WBIGHING MACHINE.

No. 585,978. Patented' my 6,1897.

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(No Model.) 5 Sheets- Sheet 5.

F. H. RICHARDS.

WEIGHING MACHINE.

No. 585,978. Patented Ju1y86`,l897.

Wz'zfnescs-es: I//zyenan' UNITED STATES PATENT @Erica FRANCIS H.RICHARDS, OF I'IAR'IFCRD, CONNECTICUT.

WEIGHING-NIACHINE.

SPECIFICATION forming part of Letters Patent No. 585,978, dated July 6,1897.

Application iiled February l2, 1897. Serial No. 623,048. (No model.)

To all whom t may conceive.-

Be it known that I, FRANCIS 1I. RICHARDS, a citizen of the UnitedStates, residing at I'Iartford, in the county of I'Iartford and State ofConnecticut, have invented certain new and useful Improvements inTeighing-Wlachines, of which the 'following is a specication.

This invention relates to weighing machines, one object of the inventionbeing to provide, in connection with the stream-controller, the closer,and the load-receiving regulator, valve-actuating mechanism theconstruction and organization of which are such that an opening movementwill be imparted to the valve by the conjoint operations of the closerand regulator and suoli openingmovement of the valve will be preventeduntil the closer is fully shut and the regulator is on the ascent.

A further object of the invention is to provide, in connection with theload-receiver of the weighing-machine, an oscillatory closer, acloser-opening actuator in connection therewith, a gravitativeload-receiving regulator supported below the closer and embodying meansfor imparting a return movement thereto, and means carried on theregulator and effective on the .return movement of said regulator forimparting a closing movement t'o the closer.

A further object of the invention is to prov.ide,in connection with thestream-controller, load-dischargcr, and receiving-regulater of theweighing-machine7 a stream -controller and two cooperative toggledevices operatively connecting the controller, discliarger, andregulator, respectively, and to so construct and organize the two toggledevices that the effective movement of the controlleractuator will bedependent upon the conjoint operation of both toggle devices, and toprovide, in connection with a regulator, means for imparting a returnmovement to the discharger and to thereby simultaneously operate thetoggle device in connection with said discharger.

In the drawings accompanying and forming part of this specification,Figure l is a front elevation ot a weighing-machine embodying myinvention. Fig. 2 is a side 4elevation of the machine as seen from theright hand in Fig. l, said ligure showing the valve mechanism in theposition it occupies when the valve is in its open position, the closerof the load-receiver being shown locked in its closed position and theregulatorhopper being shown in its elevated or load-receiving position.Fig. 3 is a similar side elevation showing the parts of theweighing-machine in the positions they occupy when the valve orstream-controller is in its closed position, the load-receiver beingshown in its lowest position and the closer and regulator being shown inthe positions they occupyjust preparatory to the discharge of the loadfrom the receiver. Fig. 4 is a side elevation of the weighing-machine,similar to Figs. 2 and 3, and showing the parts thereof in the positionsthey occupy after the closer has been opened and the regulator depressedby the weight of the load from the receiver. In this figure thevalveactuator is shown in its fully-retracted position, and the togglesin connection therewith are shown in the positions they occupy justpreparatory to the shutting of the closer by the regulator. Fig. 5 is aplan view of the weighing-machine, and Fig. G is a perspective view of aportion of the toggle mechanism that actuates the valve.

Similar characters designate like parts in all the iigures of thedrawings.

The framework for carrying the operative parts of the machine is showncomprising a longitudinally-chambered standard or upright 2, having asuitable base at the lower end thereof and having at the upper endthereof a suitable hopper or chute II.

. The load-receiver G, which is shown of the csingle-chambered type, issuspended under the supply-chute II by means of hangers 16 and 18, thatare fixed at their lower ends to the bucket and are suspended by V-shaped bearings on the pivots or knife-edges l5 and 17, respectively, ofthe arms 19 and 2l of the scale-beam B. This beam has pivots orknifeedges, such as 24, at each side of the framework, near the centerof the under side of said beam, which rest on V- shaped bearings, suchlas 20, secured upon outwardly-extending arms and 25', located near theupper end of and preferably formed integral with the column or upright2. The arms I9 and 2l of the scale-beam are shown joined together by acountcrweight XV, which constitutes a IOC connterpoise for theload-receiver that is supported at the opposite end of the scale-beam l.The load-receiver is shown cylindrical foi` a portion of its length andis furnished with a conical bottom having a discharge-openingtherethrough, which is located substantially in alinement with thelongitudinal axis of the receiver. The closer, which is designated in ageneral way by L and in the present case constitutes theload-discharger, is shown comprising a curved cut-off plate 2G, havingside walls 27 and 2S, which are pivotally supported at 29 at oppositesides of the load-receiver at a point above the discharge-opening and insubstantial alinement with the longitudinal axis of said receiver, asshown most clearly in Figs. l to t, inclusive, of the drawings. Thepivotal point of the load-discharger L is preferably locatedsubstantially midway of the front and rear edges of the cut-off plate2G, so that the center of gravity of the closer or discharge member islocated substantially in vertical alinement with the longitudinal axisof the receiver. ln contradistinetion to self-shutting closers inweighing-machines of ordinary construction the closer or load-dischargemember L in the present case is constructed and organized to -have aself-opening movement and is norm ally locked, by means hereinafterdescribed, in its closed position and is positively' actuated, in so vfar as the closing movement thereof is concerned, by mechanical means,said closer being so supported that the load contained in the receiverwill not tend to impart an opening movement to said closer.

y As a means for imparting an opening movement tothe closer orload-discharge member L said closer is 'furnished at the upper end ofone of the side walls or arms thereof with a closer-opening actuatorISO, which is shown as a counterweighted arm constituting practically anextension of one of the side arms or side walls of said closer, thelongitudinal axis of said arm intersecting the pivotal point of thecloser and coinciding with a line drawn at right angles through thecenter of the cut-off plate of said closer and the counterweight 30' ofsaid actuator being extended laterally beyond the longitudinal axis ofsaid actuator and being located in position to normally exert an openingstress on the closer.

The stream-supplying means include the hopper or chute ll and a valve70, which may be of any suitable construction, supported with itscnt-off plate below the dischargeopening of said chute, said valve beingpi votally supported substantially midway of its front and rear edges onthe side walls of the chute orhopper H, near the lower end thereof, aswill be understood by reference to Figs. l to of the drawings. rlhisvalve is shown furnished with a counterweight on the rear end thereof,that tends to impart a closing movement to said valve.

Supported below the load-receiver in position to receive the load is aregulator or regulater-hopper which is designated in a general way by Pand which is pivotally supported on the lower portion or base 3 of theupright or column 2. This regulator is shown similar in a general way tothe regulator employed in Patent No. 535,720, granted to me March 1Q,1305, and is furnished with a counterweighted arm l0, which tends toretain the regulator in its elevated or load-receiving position.

As a convenient means for retaining the closer or discharge member L inits closed position l have provided a gravitative latch 3l,pivotallysupported on the side of the loadreceiver in position forengaging the outer end of the eounterweighted arm of the closer whensaid closer is in its shut position and for holding the same againstaccidental movement; and as a means for actuating the latch to releasethe closer the valve is provided at the rear end thereof with adepending arm or thrust-rod 32, the lower end of which is lo cated inposition te engage the outer end of the latch during the last stages ofthe closing movement of the valve to thereby operate said latch andrelease the same from the closer. On the release of the latch from thecloser the closer-opening actuator becomes at once effective forimparting an opening movement to said closer, as will be understood by acomparison of the several figures of the drawings.

As a convenient means for imparting a return movement to the closer bythe regulator on the return movement thereof the closer is furnishedwith a crank-arm fixed to a pivot thereof and having a depending portion33' at its outer end, which is preferably Vfurnished with anantifriction-roller Slt, and the regulator is furnished with anupwardly-extemling arm 35, having a pivotally-snpported bypass orcloser-actuator, the upper end or working face $5/ of which is locatedin position to engage the roller on the outer end of the crankarm 33when the closer in the open position shown in Fig. 4 and which isadapted on the return or upward movement of the regulator for impartinga return or closing movement to the closer. This by-pass has acounterweight 3G, and also has a stop 37 on the forward side thereofadapted for normally retaining the by-pass in the position shown in Fig.et and at the same time facilitate the backward movement of the by-passduring the ascending movement of the load-receiver when the closer is inthe position shown in Fig. 3.

As a convenient means for actuating the valve or stream-controller andto render the opening movement of the valve dependent upon the conjointmovements of the loaddisehargcr and regulator l have provided avalve-actuating mechanism in operative connection with the beammechanism, the loaddischarger, and the regulator, and which mechanismembodies an actuating member in operative relation with the valve. Thisvalve-actuating mechanism, in the preferred form thereof shown in thedrawings, comprises a valve-actuatin g lever or cam (desig- IOO IIO

nated in a general way by D) pivotally supported in position to engageand impart an opening movement to the stream-controller or valve and twolever or cam actuating toggle devices, (designated in a general way by Tand Tf, respectively,) one of which operatively connects the cam D andthe closer L and the other el which operatively connects the cam D andthe regulator P. In the organization thereof shown most clearly in Figs.2, 5, and (5 oi. the drawings the valve-actuating lever D is pivotallysupported near the lower end thereof on the crank-arm 40, which in turnis pivotally supported at its upper end, at 40, upon the scale-beam B ata point approximately midway between the pivotal point oi saidscale-beam and the forward end thereof, said lever having a cam 4l atthe upper end thereot in position to engage the 'roller 42, carried atthe outer end of a crankarm 48, xe'd to the pivot of the valve 7 O, thelever D and the crank-arm 40 on which it is pivotcd constitutingavertically disposed toggle that is actuated by the two toggle devices T'and T. The toggle device T, which connects the lever D and the closer L,comprises a horizontally-disposed toggle 44 and a vertically-disposedactuating member 45, the toggle 44 consisting of two arms pivotallyconnected at their inner ends to the upper end of n the actuating member45, and one of which arms is connected at its outer end to the lower endof the lever D and the other ol which arms is pivotally connected at itsouter end to a iixture on the 'forwart end of the scale-beam B, thelower end of the actuating member 45 being pivotally connected to thecrank-arm 83 on the closer. The toggle device T also comprises ahorizontallydisposed toggle 4G and an actuating member 47, the toggle 46consisting of two members pivotally connected together at their innerends and to the upper end of the actuating member 47, and one of saidarms being pivotally connected at its outer end to the scalebeam in therear of the pivotal point thereof and the other member being pivotallyconnected at its forward end to the lower end of the crank-arm 40, asshown in Fig. 4, the lower end of the actuating member 47 beingpivotally connected to the counterweighted arm of the regulator P in therear of the axis of movement of said regulator. The knuckle of thehorizontal]y-disposed toggle 4G is shown in the drawings coincident withthe aXis of movement of the scale-beam when said toggle is in itsdead-center position. (See Figs. 2, 3, and 4.) This arrangementfacilitates the oscillation of the scale-beam wit-hout effecting anylongitudinal movement of the actuating member 47 of said toggle.

The toggle devices T and T' and the valveactuating lever D are soconnected and organized that on the closing movement of the dischargemember L, through the medium of the regulator P, the toggle T will iirstact to throw the workin g end of the lever D into engagement with theupper end of the crankarm 43 on the valve, but will not advance theupper end of said lever sufiiciently to inaugurate an opening movementof the valve, and the actuating member 47 and the toggle device T will,after the discharge member L has been fully closed by the upwardmovement of the regulator, straighten the toggle 4G and advance theupper end of the lever D sufficient to effect an opening movement ofsaid valve.

During the return or closing movement of the discharge member L theactuating member 45 of the toggle T tends to straight-en the toggle 44,causing the lever D to have a rotative movement upon its own axis.During this movement of the discharge member and the toggle T theactuating member 47 of the toggle T is descending and tends tostraighten the vertically-disposed toggle of which the valve-actuatin gmember D constitutes a part, thus shifting the pivotal point of themember D forward toward the valve 70. The complete straightening of thetoggle 4G does not take place until after the toggle 44 is fullystraightened by the complete closure of the discharge member, and thisstraightening movement of the toggle 4G, after the toggle 44 has come toa rest, imparts a rapid advancing movement to the working end of thelever D about that point at which said lever and the toggle 44 areconnected, as will be readily understood by a comparison4 of the severaliigures of the drawings.

Frein the foregoing it will be seen that in effect the toggle devices Tand T will complete their movements one slightlyin advance of the other,and it will be further seen that an opening movement cannot be impartedto the valve until the discharge member L is in its fully-closedposition and the regulator P is in the last stage of its ascendingmovement.

By reference to Fig. 3 of the drawings it will be seen that the descentof the bucket iirst tends to break the toggle 44, which throws thevalve-actuating lever into position to allow the closing movement of thevalve, this closing movement releasing the latch from engagement withthe closer, whereby the closer will open, allowing the contents ot' thereceiver to be discharged into the regulator, which descends under theweight of the load and breaks the toggle 4G, thus shifting thevalve-actuating lever farther backward to the position shown in Fig. 4.

Having described my invention, I claim.n

l. The combination, with a reciprocatory load-receiver having adischarge-opening` and with a gravitative load-receiving regulatorsupported below said receiver, of a closer pivotally mounted on thereceiver and having a cut-oit plate located intermediate the receiverand regulator in position to close the discharge-opening of saidreceiver; means for imparting an opening movement to the closer 5 IOOand means carried by the regulator in position to engage and impart aclosing movement to the closer.

2. The combination, with a reciprocatory load-receiver having adischarge-opening and with a gravitative load-receiving regulatorsupported below said receiver, of a counterweighted self-opening closerpivotally mounted on the receiver and having a cut-off plate locatedbetween the receiver and regulator in position to close thedischarge-opening of said receiver; and a closer-actuating devicecarried by the regulator and effect-ive, on the ascending movement ofsaid regulator, for directly imparting a return movement to said closer.

3. The combination, with a reciprocatory load-receiver having adischarge-opening at the lower end thereof, of an oscillatory closerlocated below the receiver and self-operative in one direction fordischarging the contents of the receiver; and a load-receiving regulatorshiftably supported below the closer and embodying means for engagingand imparting a return stroke to said closer.

Jr. The combination, with beam mechanism and with a load-receiversupported thereon and having a discharge-opening, of a closer locatedbelow the receiver in position to normally close the discharge-openingthereof; means for imparting a load-discharging stroke to said closer; aload-receiving regulator shiftably supported below the closer; means forimparting an ascending movement to said regulator; and means carried bythe regulator, in operative relation with the closer and effective, onthe ascending movement of said regulator, for imparting a return stroketo said closer.

5. The combination, with beam mechanism and with a load-receiversupported thereon and having a discharge-opening, of a closer locatedbelow the load-receiver in position normally to close thedischarge-opening thereof means effective at predetermined points in theascending and descending movements of the receiver, for locking andreleasing the closer; means carried on the closer, for imparting adischarging movement thereto; a gravitative load-receiving regulatorshiftably supported below the closer and embodying means for imparting areturn stroke thereto; and a closer-actuating device carried by theregulator, in operative relation with the closer and effective, on thereturn movement of said regulator, for imparting a return stroke to saidcloser.

G. The combination, with beam mechanism and with a load-receiversupported on said beam mechanism and having a dischargeopening locatedin the plane of its longitudinal axis,` of a closer pivotally supportedon the load-receiver above the discharge-opening and in a planesubstantially intersecting the longitudinal axis of said receiver andhaving a horizontally oscillatory cut-off plate located below thereceiver; means carried by the closer, for normally exerting acloseropening stress thereon; a latch on the receiver, for normallyretaining the closer in its closed position; means for operating thelatch to release the closer; a gravitative loadreceiving regulatorlocated below the closer; and an actuating device carried by theregulator and effective, on the rising movement of said regulator, fordirectly imparting a closing movement to the closer.

7. The combination, with weighing mechanism embodying a load-receiverhaving a discharge-opening in substantial alinement with thelongitudinal axis thereof, of a counterweighted self-openin g closerpivotally supported intermediate its ends on the receiver above thedischarge-opening thereof; a latch for normally retaining the closer inits closed position; stream supplying means located above the receiverand embodying an oscillatory self-closing stream-controller; meanscontrolled by the closing movement of the stream-controller foractuating the latch to release the closer and permit an opening movementthereof; and a load-receiving regulator located below the receiver andembodying means for imparting a closing movement to the closer.

S. rl'he combination, with weighing mechanism embodying a load-receiver,of a closer pivotally supported on the load-receiver substantiallymidway of the width thereof and above the discharge-opening; alaterally-disposed aetuati ng-arm fixed to the closer; means on thecloser for imparting an opening movement thereto; and a gravitativeload-receiving regulator pivotally supported below the load-receiver andembodying means operative on the ascending movement thereof for engaging the actuating-arm of, and for imparting a closing movement to,said closer.

9. The combination, with weighing mechanism embodying a reciprocatoryload-receiver, of a counterweighted self opening closer pivotallycarried on the load-receiver above the discharge-opening thereof andhaving a laterally-disposed actuator-arm; a latch for retaining thecloser normally in its closed position; stream -supply means embodying avalve; means for actuating the valve; means controlled by the valve, onthe closing movement thereof, for releasing the closer-holding latch; agravitative load-receiving regulator located below the discharge end ofthe receiver; and means carried bythe regulator and effective, on therising movement thereof, for engaging the actuator-arm of, and forimparting a closing movement to, the closer.

l0. The combination, with weighing meehanism embodying a reciprocatoryload-receiver having a discharge-opening in substantial alinement withthe longitudinal axis thereof, of a self-opening closer having apivot-support on the load-receiver above the discharge-opening and in aplane substantially intersecting the longitudinal axis of IOO IIC

said receiver; a gravitative latch pivotally supported on the receiverin position for engaging and normally retaining the closer in its closedposition; and means operative on the descent of the load-receiver foroperating the latch to release the same from engagement with the closer.

1l. The combination, with weighing mechanism embodying a load-receiverhaving an oscillatory closer normally locked in its closed position andwith means carried on the closer for imparting an opening movementthereto, of a gravitative regulator-hopper supported below the receiver;and two cooperative closer-shuttin g members, one of which is carried onthe closer and the other of which is carried on the regulator-hopper andwhich are effective on the ascending movement of said hopper forshutting the closer.

l2. The combination, with weighing mechanism including a load-receiverhaving a discharge-openin g in substantial alinem ent with thelongitudinal axis thereof, of a closer pivotally supported on thereceiver above the discharge-opening thereof and having its center ofgravity in substantial vertical alinement with the longitudinal axis ofthe receiver; means carried on the closer for imparting an openingmovement thereto; a latch carried on the receiver and normally engagingand holding the closer in its closed position5'a stream-supply meansembodying an oscillatory valve located above the receiver; meanscontrolled by the valve, on the closing movement thereof, for actuatingthe latch to release, and permit an opening movement of7 the closer; aload-receiving regulator pivotally supported below the load-receiver;means for imparting an upward movement to the controller; and meanscarried on the controller and operative on the upward movement thereoffor shutting the closer.

13. The combination, with weighing mechanism including an oscillatoryload discharger movable in one direction for discharging a load, of aload-receiving regulator located below the discharger; means forimparting an upward movement to the regulator; and means, including aby-pass, mounted on the regulator and effective on the upward movementof said regulator for imparting a return movement to theload-discharger.

14. The combination, with weighingmechanism embodying a load-receiverhaving a discharge-opening, of a counterweighted selfopening closerpivotally mounted on the receiver in position to close thedischarge-opening thereof; a counterweighted gravitative regulatorlocated below the load-receiver; an actuating-arm on the closer; acloser-actuating by-pass pivotally mounted on the regulator in positionfor engaging the arm of the closer and effective, on an upward movementof the regulator, for shutting said closer; a locking device carried onthe load-receiver in position for engaging and normally retaining thecloser in its closed position; and means for actuating the lookin deviceto release the closer.

15. The combination, with weighin g mechanism embodying a load-receiverhavin g a discharge-opening, of a counterweighted selfopening closerpivotally mounted on the receiver and effective for closin g thedischargeopening thereof; a gravitative regulator located below theload-receiver; means for imparting an upward movement to the regulator;an actuating-arm on the closer; a closeractuating by-pass pivotallymounted on the regulator in position for engaging the arm of the closerand effective, on the upward movement of said regulator, for shuttingsaid closer; a locking device carried on the loadreceiver in positionfor engaging and normally retaining the closer in its closed position;supply means embodying an oscillatory valve located above theload-receiver; means for imparting a closing movementto the valve; andmeans controlled by the valve, at the last stage of its closingmovement, for actuating the locking device to release the closer andpermit an opening movement thereof.

`l6. The combination, with a load-receiver having a discharge-opening atthe lower end thereof an d with a closer having a cut-off plate locatedbelow the receiver and in position for normally closing thedischarge-opening thereof, of a load-receivin g regulator located belowthe receiver and embodying means for engaging and imparting a closingmovement to the closer; stream-supply means including an oscillatoryvalve located above the load-receiver; and a dupleX-valve-actuatingdevice operatively connecting the valve to both the closer and regulatorin such manner that an effective movement of the valve will depend uponthe successive movements of said closer and regulator.

17. The combination, with a load-receiver having an oscillatory valveand with a loadreceiving regulator located below said valve; of meanscarried by the regulator, for imparting a return movement thereto; acloseractuating arm carried by the regulator in position for engagingand imparting a closing movement to the closer on the return movement ofthe regulator; stream-supply means located above the load-receiver andembodying a self-closing valve; and duplex actuating mechanism embodyingtwo cooperative actuators, one of which is directly connected to thecloser, and the other of which is directly connected to the regulator,and both of which are successively operated, on the successive movementsof the closer and regulator, for imparting an opening movement to thevalve. f

18. The combination, in a weighing-machine, of a reciprocatoryload-receiver having a self-opening closer; supply means including aself-closing valve; a gravitative regulator pivotally supported belowand in position to receive the load from the load-receiver and todescend under the weight of said load; a du- ICO IIO

IIS

pleX-valvc actuator pivotally connecting the valve to the closer and tothe regulator; means carried by the regulator in position for directlyimparting a closing movement to the closer on the return movement of theregulator; and means for imparting a ret-urn movement to the regulatorand for simultaneously imparting a valve-closing movement to theduplex-valve actuator.

19. The combination, with weighing mechanism including a load-receiverhaving a closer and with supply means including a stream-controller, ofa regulator located to receive the load from the load-receiver andadapted to descend under the weight of such load; means for returningthe regulator to its normal load-receiving position ai'ter the dischargeof its load; a duplex stream-controlleractuating device operativelyconnecting the stream-controller with the closer and the regulator; andmeans including` a by-pass, carried by the regulator in position forimparting a closing movement to the closer on the return movement ofsaid regulator and for simultaneously imparting an opening movement tothe stream-controller through the medium of the duplex stream-controlleractuator.

20. The combination, with weighing mechanism including a load-receiverhaving a selfopenin g closer and with stream-supply means including aself-closing valve, of a regulator pivotally supported to receive theload from the load-receiver and adapted to descend under the weight ofsaid load; mea-ns for returning` the regulator to its load-receivingposition after the descent thereof; a valveopening actuatoriu operativeconnection with the closer and embodying a togggle; and means carried onthe regulator and effective, on the return movement of said regulator,for shutting the closer and operating the valve-opening actuator.

2l. The combination, with wcighingmechanism including a load-receiverhaving a closer and with supply means including a stream-controller, ofa regulator located to receive the load from the load-receiver andadapted to descend Linder the weight of said load; means for imparting areturn movement to the regulator; a latch normallyholding the closer inits closed position; means actuated by the closing movement of thestream-controller for releasing the latch from engagement with thecloser; means operative with the regulator, on the return movementthereof, for imparting a closing movement to the closer; acontroller-opening aetuator; and toggle mechanism operatively connectingthe controlleractuator, closer, and regulator and controlled by saidcloser and regulator on the closing and return movements,A respectivelythereof, for imparting an opening movement to the controller.

22. rlhe combination, with an oscillatory beam and with a load-receiversupported on said beam and having a closer, of stream-supply meansembodying an oscillatory valve;

anism including a pivotal beam and a loadreceiver supported on said beamand having a self-opening closer, of supply means embodying aself-closing oscillatory stream-controller; a counterweightedcloser-actuating regulator supported below, and in position to receivethe load from, the load-receiver and adapted to descend under the weightol' said load; and a valve-opening actuator embodying a duplex-toggledevice in operative connection with the beam, closer, and regulater, ande'l'iective, on the closing movement of the closer and the ascendingmovement ot the regulator, for imparting an opening movement to thevalve.

2i. The combination, with weighing mechanism including a load-receiverhaving a closer and with a load-receiving regulator supported below thecloser, of stream-supply means including a stream-controller; andstream-controller-actuating mechanism coniprising two connected toggledevices, one of which is directly connected with the closer and theother of which is directly connected with the regulator; and means foractuating the two toggle devices in succession.

25. The combination, with weighing mechanism including a load-dischargermovable in one direction for discharging the load and with acounterweightcd regulator supported below and in position to receive theload from the discharger and adapted to descend under the weight of saidload, of stream-supply means including a valve located above thedischarger; means for imparting a closing movement t-o the valve; avalve opening member pivotally supported in operative relation with thevalve; two toggle devices, one of which operatively connects thevalve-opening member and discharger, and the other of which operativelyconnects the valve-openin g member and the regulator, and which toggledevices are actuated, respectively, by the discharge and regulator, oneslightly in advance of the other, for imparting a valve-opening movementto said member; and means carried by the regulator for imparting areturn movement to the discharger.

2G. In a weighing-machine, the combination, with a load-receiver and itscloser and with a gravitative load-receiving regulator and means forimparting a return movement thereto, of stream-supply means including aself-closing valve having a crank-arm; and a duplex-toggle deviceincluding a valve- IOO IIO

opening cam located in position to engage the crank-arm and open. thevalve, and said duplex-toggle device comprising two toggles, one ofwhich operatively connects the valveopening cam and closer and the otherof which operatively connects said cam and the regulator, theorganization. being such that the valve-opening cam is dependent for itseffective operation upon the combined movements of the closer andregulator.

27. The combination', with weighin 1n echanism embodying a load-receiverhaving a closer and with stream-supply means including a valve, of agravitative regulator supported below the receiver in position toreceive and descend under the weight of a load :from the receiver; avalve-actuating cam su pported in operative relation with the valve; acompound toggle device carried by the weighing mechanism and operativelyconnecting the valve-opening cam, the closer, and the regulator and soconstructed and organized as to first throw the cam into operativeengagement with the valve simultaneously with the closing movement ofthe closer, and next impart a valve-opening movement to said cam duringthe latter stages of the return movement of the regulator; and meanscarried by the regulator and controlled by the return movement thereoffor imparting a closing movement to the closer.

28. The combination, with weighing mechanism embodying a load-receiverand with stream-supplying means embodying a selfclosing valve, of avalve-actuating mechanism including a closer and a regulator one ofwhich is actuated by the other and both of which cooperate to controlthe opening movement of the valve,

2f). The combination, with weighing mechanism including a load-receiverhaving a closer and with stream-supply means including astream-controller, of a gravitative regulator supported below and inposition to receive the load from the receiverand adapted to descendunder the weight of said load;l a cam pivotally supported in operativerelation with the valve and two cooperating cam-actuators each embodyinga toggle in operative connection with the cam and one of whichconstitutes a connector between the cam and closer, and the other aconnector between said cam and regulator, and one of which actuators iseffective, on the shutting of the closer, for advancing the cam througha portion of its stroke and the other of which is effective, on thereturn movement of the regulator, for completing the cani stroke tothereby impart an opening movement to the stream-controller.

30. Ina weighing-machine, in combination, weighing mechanism embodying apivotallysupported beam; a load-receiver carried on said beam and havingan oscillatory closer; a gravitative regulator supported below and inposition to receive a load from the loadreceiver and adapted to descendunder the weight of said load; stream-supplying means including aself-closing valve located above the load-receiver; a valve-actuatingcam pivotally supported on the beam; two togglejoints pivotallyconnected at their inner ends to the cam and at their outer ends to thebeam; two toggle-actuating members, one of which is pivotally connectedat its upper end to the knee of one toggle and at its lower end to thecloser, and the other of which is pivotally connected at its upper endto the knee of the other toggle and at its lower end to the regulator;and means for shutting the closer and raising the regulator to therebyoperate the toggle-actuating members one slightly in advance of theother.

3l. In a weighing-machine, the combination, with stream-supply meansincluding a valve, of valve-actuatin g mechanism comprising a campivotally supported in position to engage and actuate the valve, and twoeamactuating toggles in pivotal connection with the cam and operativeone for shifting the cam into operative engagement with the valve andthe other for imparting a valve-opening movement to said cam; and meansfor actuating said toggles.

32. The combination, with weighing meehanism including a beam and aload-receiver and with stream-supplying means including a valve, of twohorizontally-disposed toggles pivotally connected at their outer ends tothe beam; an intermediate vertically-disposed toggle pivotally connectedat the outer end to the beam and at the lower end thereof to one toggleand pivotally connected at its knuckle to the inner end of the othertoggle, and one of the members of said intermediate toggle constitutinga valve-actuator; and means for operating the two horizontally-disposedtoggles and connected intermediate toggle and thereby impart to thevalve-actuating member of the intermediate toggle differentialvalve-opening movements.

FRANCIS Il. RICHARDS.

l/Vitnessesz FRED. J. DoLn, l?. N. CHASE.

IOO

